化学反应机理对激波与可燃氢气泡相互作用影响的数值研究

doi:10.19596/j.cnki.1001-246x.7665

计算物理 ›› 2018, Vol. 35 ›› Issue (4): 388-396.DOI: 10.19596/j.cnki.1001-246x.7665

化学反应机理对激波与可燃氢气泡相互作用影响的数值研究

王子昂, 余彬, 杭皓天, 张斌, 刘洪

上海交通大学航空航天学院, 上海 200240

收稿日期:2017-03-27 修回日期:2017-06-04 出版日期:2018-07-25 发布日期:2018-07-25
通讯作者: 张斌(1983-),男,副研究员,E-mail:zhangbin1983@sjtu.edu.cn
基金资助:
国家自然科学基金（91441205）及青年基金（51606120）资助项目

Numerical Study on Influence of Reaction Mechanisms on Reactive Shock Bubble Interaction

WANG Ziang, YU Bin, HANG Haotian, ZHANG Bin, LIU Hong

Shanghai Jiaotong University School of Aeronautics and Astronautics, Shanghai 200240, China

Received:2017-03-27 Revised:2017-06-04 Online:2018-07-25 Published:2018-07-25

摘要/Abstract

摘要： 通过含化学源项的Navier-Stokes方程对激波与可燃界面相互作用（RSBI）进行数值研究，讨论三种氢氧化学反应机理对点火过程、燃烧效率和面积压缩率等物理化学特征的影响.三种化学反应分别为：Evans-Schexnayder反应模型（ES模型），Jachimowski反应模型（J模型）及Ó Conaire反应模型（Ó模型）.研究表明：ES模型下的气泡点火延迟时间最大，平衡温度最低且点火位置异于J模型和Ó模型.采用无量纲面积来表征激波和燃烧作用气泡的形变特征，结果表明：燃烧释热阶段的气泡面积对化学反应模型的选择非常敏感，其中J模型的面积膨胀率最高.然而对于模拟长期发展的RSBI流场燃烧效率，不同化学反应模型之间的差异相对缩小.由于ES模型难以准确捕捉点火位置，J模型和Ó模型更适合模拟RSBI这类复杂流动的点火现象及燃烧流动耦合过程.

关键词: 氢氧反应机理, 超声速燃烧, 激波与可燃气泡相互作用, 燃烧流动耦合

Abstract: We solve Navier-Stokes equation with chemical source term, focusing on effect of three oxygen-hydrogen chemical reaction mechanisms on ignition, combustion efficiency and area compression ratio of reactive shock bubble interaction(RSBI). These chemical reaction mechanisms are Evans-Schexnayder(ES) model, Jachimowski(J) model, Ó Conaire(Ó) model, respectively. Results simulated with ES model show that subjected to shock wave,bubble has the largest ignition delay; the lowest balanced temperature and its ignition position is different from J model and Ó model.Dimensionless area is adopted to characterize shape of bubble under effect of shock and combustion. It shows that simulation of bubble area is closely related to chemical reaction model after stage of heat release,and J model has the highest dilation rate. In simulating combustion efficiency of long-term RSBI flow field, differences among chemical reaction models are relatively decreased. As ES model fails to reveal ignition position correctly, J model and Ó model are suitable for simulating RSBI.

Key words: oxygen-hydrogen reaction mechanisms, supersonic combustion, RSBI, combustion flow coupling

中图分类号:

O354.5

王子昂, 余彬, 杭皓天, 张斌, 刘洪. 化学反应机理对激波与可燃氢气泡相互作用影响的数值研究[J]. 计算物理, 2018, 35(4): 388-396.

WANG Ziang, YU Bin, HANG Haotian, ZHANG Bin, LIU Hong. Numerical Study on Influence of Reaction Mechanisms on Reactive Shock Bubble Interaction[J]. CHINESE JOURNAL OF COMPUTATIONAL PHYSICS, 2018, 35(4): 388-396.

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化学反应机理对激波与可燃氢气泡相互作用影响的数值研究

Numerical Study on Influence of Reaction Mechanisms on Reactive Shock Bubble Interaction

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